If n 1 , n 2 and n 3 are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequency n of the string is given by :-

1. A. 1 n = 1 n 1 + 1 n 2 + 1 n 3
2. B. 1 n = 1 n 1 + 1 n 2 + 1 n 3
3. C. n = n 1 + n 2 + n 3
4. D. n=n 1+n 2+n 3

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